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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Upgraded Sway Bars....big difference



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      03-13-2011, 12:28 AM   #23
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Quote:
Originally Posted by DaFish View Post
I did the Dinan Stage 3 - not the rear bar... due to the fact they recommend a LSD at the same time due to loss of traction with just doing the rear bar and no LSD.

I am doing both now - I did do the Dinan rear bar to match the Stage 3.. I felt I had to stick with Dinan on the rear bar. If was to do this over, I would do the M3 bars and a setup from Harold with Swifts...but I didn't.

I'll post up how my rear bar affects things when I get it on with the LSD (doing the subframe bushings at the same time).

And ya, I spent way too much fn money... the Dinan rear bar along was $369 before shipping, taxes and duty . I might as well have given them a kidney...
When are you having that done? Good idea to do that rear bar in conjunction with subframe bushings and lsd. Looking forward to a review..
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      03-13-2011, 12:33 AM   #24
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Quote:
Originally Posted by chrisw335i View Post
better off saving your money and just changing the bushings..cost ya like 25 bucks for the m3 sway bar bushings..cause there isnt much of a difference at all between the sports package sway and m3 sway.just the bushings
That's what I've been thinking about doing in conjunction with the m-sport 14mm rear bar. The front bar does have that tappered down center section which the M3 bar doesn't though. I'm curious to hear thoughts or experience on adding the M3 front mount bushings to zsp bar. Did you do that?
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      03-13-2011, 07:55 AM   #25
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Quote:
Originally Posted by chrisw335i View Post
better off saving your money and just changing the bushings..cost ya like 25 bucks for the m3 sway bar bushings..cause there isnt much of a difference at all between the sports package sway and m3 sway.just the bushings
Except it takes about 5 hours of labour to do that... if you are in there, dropped the subframe and all that, you might as well put the M3 bar in right?
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      03-13-2011, 09:14 AM   #26
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Quote:
Originally Posted by cvc 22349a View Post
That's what I've been thinking about doing in conjunction with the m-sport 14mm rear bar. The front bar does have that tappered down center section which the M3 bar doesn't though. I'm curious to hear thoughts or experience on adding the M3 front mount bushings to zsp bar. Did you do that?
I havent done it yet, but I am going to order them and try it..hell for 25 bucks it wont hurt..the bars are a slight differencein shape, but im not sure if it makes a huge biasing difference..same diameter..so I am gonna go for it..it should only take bout 15 minutes..ill let everyone know once I get it done
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      03-13-2011, 09:15 AM   #27
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Quote:
Originally Posted by DaFish View Post
Except it takes about 5 hours of labour to do that... if you are in there, dropped the subframe and all that, you might as well put the M3 bar in right?
This is the front sway bar we are talking about..maybe take 15 minutes tops to swap out the bushings..I aint messin with the rear just yet
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      03-13-2011, 09:33 AM   #28
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Quote:
Originally Posted by chrisw335i View Post
This is the front sway bar we are talking about..maybe take 15 minutes tops to swap out the bushings..I aint messin with the rear just yet
well that makes sense... for sure.
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      03-13-2011, 10:52 AM   #29
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cause there isnt much of a difference at all between the sports package sway and m3 sway.just the bushings
Are you talking front or rear?

You waaaaaaaaaaaay off if you're talking about the rear bar. The stock bar is 13mm, the BMW performance bar is 14mm and the M3 bar is 20mm. From 13 or 14mm to 20mm is a HUGE difference.
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      03-13-2011, 12:48 PM   #30
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just as stated above, I am only referring to the front sway..I know the rear is a major difference
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      03-13-2011, 03:56 PM   #31
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one thing to remember about the front, the middle section drops down in size, the M3 front does not. minor as it is, it will cause more deflection. If you can find a cheap used M3 bar with the bushings, it does make a difference and the install is fairly easy.
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      03-13-2011, 11:37 PM   #32
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Quote:
Originally Posted by bigdaddycane View Post
one thing to remember about the front, the middle section drops down in size, the M3 front does not. minor as it is, it will cause more deflection. If you can find a cheap used M3 bar with the bushings, it does make a difference and the install is fairly easy.
Do you mean that adding the M3 bushings/bearings to the zsp front bar will cause more deflection because of that tappered center section or just that the zsp bar itself has more deflection than the M3 bar? I'd be concerned that the former might occur. I wonder how that would affect handling dynamics?
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      03-14-2011, 03:41 AM   #33
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I installed the M3 rear sway bar first, as i have the m-sport coupe and noticed it wasn't properly balanced going hard into corners the back was perfect but the front had more body roll,so i installed the M3 front bar and what a difference the car is nicely balanced and the front is anchored down and it is a big difference in conjunction with the M3 tension struts.
You get more feel through the steering wheel because of the M3 sway bar bushings.
Money well spent on M3 sway bars.
Highly recommended.
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      03-14-2011, 05:58 AM   #34
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Quote:
Originally Posted by chappy View Post
I installed the M3 rear sway bar first, as i have the m-sport coupe and noticed it wasn't properly balanced going hard into corners the back was perfect but the front had more body roll,so i installed the M3 front bar and what a difference the car is nicely balanced and the front is anchored down and it is a big difference in conjunction with the M3 tension struts.
You get more feel through the steering wheel because of the M3 sway bar bushings.
Money well spent on M3 sway bars.
Highly recommended.
I wouldn't mess about with just bushings... if you are going to do this, replace the bar(s) and match them up.

Do the M3 bars understeer still? Did you do the M3 tension arms and wishbones in the front? I highly recommend those... really nice - no cons - none.
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      03-14-2011, 07:00 AM   #35
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Quote:
Originally Posted by DaFish View Post
I wouldn't mess about with just bushings... if you are going to do this, replace the bar(s) and match them up.

Do the M3 bars understeer still? Did you do the M3 tension arms and wishbones in the front? I highly recommend those... really nice - no cons - none.
I replaced both sway bars to the m3 ones with the m3 bushings and m3 brackets.
Yes did the tension arms and wishbones before the sway bar install.
Understeer almost eliminated.
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      03-14-2011, 07:20 AM   #36
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Quote:
that the zsp bar itself has more deflection than the M3 bar?
this is what I was referring to.

Quote:
wouldn't mess about with just bushings... if you are going to do this, replace the bar(s) and match them up.
+1
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      07-21-2016, 09:09 AM   #37
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thread revival!

The Eibach sway kit has "Greasable Urethane Bushings For Increased Responsiveness"

i assume that is stiffer than OE (335d m sport) or would you think it is worth changing the bushings that come with Eibach?
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      07-24-2016, 11:32 PM   #38
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I started with a M3 front say bar on the 335i I had.
Afterwards I installed a full Eibach sway kit (replaced the front M3 with the Eibach) and it made a very noticeable good difference. Car would corner flatter and feel a bit sharper. The Eibachs are also not hollow, they are solid.
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      07-28-2016, 10:05 PM   #39
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Quote:
Originally Posted by tphss View Post
I started with a M3 front say bar on the 335i I had.
Afterwards I installed a full Eibach sway kit (replaced the front M3 with the Eibach) and it made a very noticeable good difference. Car would corner flatter and feel a bit sharper. The Eibachs are also not hollow, they are solid.
so if i understand you correctly, the eibach is the better set compared to the m3?? did it come with bushings? also are you on stock subframe bushings?
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      07-29-2016, 09:04 AM   #40
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I would recommend the stock M3 sway bar updraged.
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      07-30-2016, 01:47 AM   #41
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Quote:
Originally Posted by tphss View Post
I started with a M3 front say bar on the 335i I had.
Afterwards I installed a full Eibach sway kit (replaced the front M3 with the Eibach) and it made a very noticeable good difference. Car would corner flatter and feel a bit sharper. The Eibachs are also not hollow, they are solid.
I'd like to know too. Eibach front and rear sway bar, also came with bushings?

I have a non-sport E90 but has the front sway bar, I'm not sure if I have the rear sway bar. If I did have the rear sway bay. Should I might as well change the bushings to M3 ones? (for the purpose of maintenance and improvement on an 106k mile car daily driver, no tracking or anything else)

Last edited by Route 16; 07-30-2016 at 11:49 AM..
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      07-30-2016, 08:53 AM   #42
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Quote:
Originally Posted by Route 16 View Post
I'd like to know too. Eibach front and rear sway bar, also came with bushings?

I have a non-sport E90 but has the front sway bar, I'm not sure if I have the rear sway bar. If I did have the rear sway bay. Could I might as well change the bushings to M3 ones? (for the purpose of maintenance and improvement on an 106k mile car daily driver, no tracking or anything else)
looking at that eibach pro sway kit as well, looks beefier than the M3, comes with bushings as well
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      07-30-2016, 06:53 PM   #43
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Quote:
Originally Posted by dleccord View Post
so if i understand you correctly, the eibach is the better set compared to the m3?? did it come with bushings? also are you on stock subframe bushings?
Sorry for the delay, didn't get notification for this thread. Yes in my opinion it is better since they are solid, I felt a difference. And yes they come with bushings (red in color).
Original subframe bushings. M3 diff bushings.

Quote:
Originally Posted by Route 16 View Post
I'd like to know too. Eibach front and rear sway bar, also came with bushings?

I have a non-sport E90 but has the front sway bar, I'm not sure if I have the rear sway bar. If I did have the rear sway bay. Should I might as well change the bushings to M3 ones? (for the purpose of maintenance and improvement on an 106k mile car daily driver, no tracking or anything else)
Yes, bushings are included with a small packet of grease. I would recommend the Eibach kit. Would probably get it again if I bought another e9X.
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      07-31-2020, 06:27 AM   #44
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Hi, just thinking about doing an upgrade of sway bars on my E91 325i.
I want to install suspension Bilstein B12 and thinking also about sway bars upgrade.
Would you recommend used M3 sway bars with M3 bushing?
Recently I found also H&R sway bar set 27 and 20mm but of course not very cheap.
I'm just not sure what would be better option and result in better control of the car and not loosing all the comfort as well.
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